3 wings step drag bits | ||
Diameter | Thread | |
2 to 17 1/2 inch | 50.8 to 444.5mm | Optional |
Features:
1, A solid one piece heat treated, 4140 alloy steel body for bit strength & durability;
2, CNC threaded machining for proper installation &use;
3, Forgings are milled to better seat the carbide inserts.
4, Select tungsten carbide inserts 5.5mm thick are standard.
5, Relief is hand ground behind carbide inserts for maximum performance.